6887571: Increase default heap config sizes

Summary: Apply modification of existing server heap size ergo to all collectors except CMS.
Reviewed-by: jmasa, ysr, xlu

src/cpu/sparc/vm/c1_globals_sparc.hpp

@@ -22,10 +22,9 @@
  *
  */
 
-//
 // Sets the default values for platform dependent flags used by the client compiler.
 // (see c1_globals.hpp)
-//
+
 #ifndef TIERED
 define_pd_global(bool, BackgroundCompilation,        true );
 define_pd_global(bool, CICompileOSR,                 true );
@@ -48,27 +47,24 @@ define_pd_global(intx, OnStackReplacePercentage,     1400 );
 define_pd_global(bool, UseTLAB,                      true );
 define_pd_global(bool, ProfileInterpreter,           false);
 define_pd_global(intx, FreqInlineSize,               325  );
-define_pd_global(intx, NewRatio,                     8    ); // Design center runs on 1.3.1
 define_pd_global(bool, ResizeTLAB,                   true );
 define_pd_global(intx, ReservedCodeCacheSize,        32*M );
 define_pd_global(intx, CodeCacheExpansionSize,       32*K );
 define_pd_global(uintx,CodeCacheMinBlockLength,      1);
-define_pd_global(uintx, PermSize,                    12*M );
-define_pd_global(uintx, MaxPermSize,                 64*M );
-define_pd_global(bool, NeverActAsServerClassMachine, true);
+define_pd_global(uintx,PermSize,                     12*M );
+define_pd_global(uintx,MaxPermSize,                  64*M );
+define_pd_global(bool, NeverActAsServerClassMachine, true );
 define_pd_global(intx, NewSizeThreadIncrease,        16*K );
-define_pd_global(uintx, DefaultMaxRAM,               1*G);
+define_pd_global(uint64_t,MaxRAM,                    1ULL*G);
 define_pd_global(intx, InitialCodeCacheSize,         160*K);
-#endif // TIERED
+#endif // !TIERED
 
 define_pd_global(bool, UseTypeProfile,               false);
 define_pd_global(bool, RoundFPResults,               false);
 
-
-define_pd_global(bool, LIRFillDelaySlots,            true);
+define_pd_global(bool, LIRFillDelaySlots,            true );
 define_pd_global(bool, OptimizeSinglePrecision,      false);
-define_pd_global(bool, CSEArrayLength,               true);
+define_pd_global(bool, CSEArrayLength,               true );
 define_pd_global(bool, TwoOperandLIRForm,            false);
 
-
-define_pd_global(intx, SafepointPollOffset, 0);
+define_pd_global(intx, SafepointPollOffset,          0    );

src/cpu/sparc/vm/c2_globals_sparc.hpp

@@ -59,7 +59,6 @@ define_pd_global(intx, FLOATPRESSURE,                52);  // C2 on V9 gets to u
 define_pd_global(intx, FreqInlineSize,               175);
 define_pd_global(intx, INTPRESSURE,                  48);  // large register set
 define_pd_global(intx, InteriorEntryAlignment,       16);  // = CodeEntryAlignment
-define_pd_global(intx, NewRatio,                     2);
 define_pd_global(intx, NewSizeThreadIncrease, ScaleForWordSize(4*K));
 // The default setting 16/16 seems to work best.
 // (For _228_jack 16/16 is 2% better than 4/4, 16/4, 32/32, 32/16, or 16/32.)
@@ -83,25 +82,25 @@ define_pd_global(bool, OptoScheduling,               true);
 // sequence of instructions to load a 64 bit pointer.
 //
 // InitialCodeCacheSize derived from specjbb2000 run.
-define_pd_global(intx, InitialCodeCacheSize,     2048*K); // Integral multiple of CodeCacheExpansionSize
-define_pd_global(intx, ReservedCodeCacheSize,    48*M);
-define_pd_global(intx, CodeCacheExpansionSize,   64*K);
+define_pd_global(intx, InitialCodeCacheSize,         2048*K); // Integral multiple of CodeCacheExpansionSize
+define_pd_global(intx, ReservedCodeCacheSize,        48*M);
+define_pd_global(intx, CodeCacheExpansionSize,       64*K);
 
 // Ergonomics related flags
-define_pd_global(uintx, DefaultMaxRAM,           32*G);
+define_pd_global(uint64_t,MaxRAM,                    128ULL*G);
 #else
 // InitialCodeCacheSize derived from specjbb2000 run.
-define_pd_global(intx, InitialCodeCacheSize,     1536*K); // Integral multiple of CodeCacheExpansionSize
-define_pd_global(intx, ReservedCodeCacheSize,    32*M);
-define_pd_global(intx, CodeCacheExpansionSize,   32*K);
+define_pd_global(intx, InitialCodeCacheSize,         1536*K); // Integral multiple of CodeCacheExpansionSize
+define_pd_global(intx, ReservedCodeCacheSize,        32*M);
+define_pd_global(intx, CodeCacheExpansionSize,       32*K);
 // Ergonomics related flags
-define_pd_global(uintx, DefaultMaxRAM,           1*G);
+define_pd_global(uint64_t,MaxRAM,                    4ULL*G);
 #endif
-define_pd_global(uintx,CodeCacheMinBlockLength,  4);
+define_pd_global(uintx,CodeCacheMinBlockLength,      4);
 
 // Heap related flags
-define_pd_global(uintx, PermSize,    ScaleForWordSize(16*M));
-define_pd_global(uintx, MaxPermSize, ScaleForWordSize(64*M));
+define_pd_global(uintx,PermSize,    ScaleForWordSize(16*M));
+define_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M));
 
 // Ergonomics related flags
 define_pd_global(bool, NeverActAsServerClassMachine, false);

src/cpu/sparc/vm/globals_sparc.hpp

@@ -22,10 +22,8 @@
  *
  */
 
-//
 // Sets the default values for platform dependent flags used by the runtime system.
 // (see globals.hpp)
-//
 
 // For sparc we do not do call backs when a thread is in the interpreter, because the
 // interpreter dispatch needs at least two instructions - first to load the dispatch address
@@ -41,26 +39,23 @@ define_pd_global(bool, NeedsDeoptSuspend,           true); // register window ma
 define_pd_global(bool, ImplicitNullChecks,          true);  // Generate code for implicit null checks
 define_pd_global(bool, UncommonNullCast,            true);  // Uncommon-trap NULLs past to check cast
 
-define_pd_global(intx,  CodeEntryAlignment,    32);
-define_pd_global(uintx, TLABSize,              0);
-define_pd_global(uintx, NewSize, ScaleForWordSize((2048 * K) + (2 * (64 * K))));
-define_pd_global(intx,  SurvivorRatio,         8);
-define_pd_global(intx,  InlineFrequencyCount,  50);  // we can use more inlining on the SPARC
-define_pd_global(intx,  InlineSmallCode,       1500);
+define_pd_global(intx, CodeEntryAlignment,    32);
+define_pd_global(intx, InlineFrequencyCount,  50);  // we can use more inlining on the SPARC
+define_pd_global(intx, InlineSmallCode,       1500);
 #ifdef _LP64
 // Stack slots are 2X larger in LP64 than in the 32 bit VM.
-define_pd_global(intx,  ThreadStackSize,       1024);
-define_pd_global(intx,  VMThreadStackSize,     1024);
+define_pd_global(intx, ThreadStackSize,       1024);
+define_pd_global(intx, VMThreadStackSize,     1024);
 #else
-define_pd_global(intx,  ThreadStackSize,       512);
-define_pd_global(intx,  VMThreadStackSize,     512);
+define_pd_global(intx, ThreadStackSize,       512);
+define_pd_global(intx, VMThreadStackSize,     512);
 #endif
 
 define_pd_global(intx, StackYellowPages, 2);
 define_pd_global(intx, StackRedPages, 1);
 define_pd_global(intx, StackShadowPages, 3 DEBUG_ONLY(+1));
 
-define_pd_global(intx,  PreInflateSpin,        40);  // Determined by running design center
+define_pd_global(intx, PreInflateSpin,       40);  // Determined by running design center
 
 define_pd_global(bool, RewriteBytecodes,     true);
 define_pd_global(bool, RewriteFrequentPairs, true);

src/cpu/x86/vm/c1_globals_x86.hpp

@@ -22,10 +22,8 @@
  *
  */
 
-//
 // Sets the default values for platform dependent flags used by the client compiler.
 // (see c1_globals.hpp)
-//
 
 #ifndef TIERED
 define_pd_global(bool, BackgroundCompilation,        true );
@@ -48,27 +46,24 @@ define_pd_global(intx, Tier4BackEdgeThreshold,       100000);
 
 define_pd_global(intx, OnStackReplacePercentage,     933  );
 define_pd_global(intx, FreqInlineSize,               325  );
-define_pd_global(intx, NewRatio,                     12   );
 define_pd_global(intx, NewSizeThreadIncrease,        4*K  );
 define_pd_global(intx, InitialCodeCacheSize,         160*K);
 define_pd_global(intx, ReservedCodeCacheSize,        32*M );
 define_pd_global(bool, ProfileInterpreter,           false);
 define_pd_global(intx, CodeCacheExpansionSize,       32*K );
 define_pd_global(uintx,CodeCacheMinBlockLength,      1);
-define_pd_global(uintx, PermSize,                    12*M );
-define_pd_global(uintx, MaxPermSize,                 64*M );
-define_pd_global(bool, NeverActAsServerClassMachine, true);
-define_pd_global(uintx, DefaultMaxRAM,               1*G);
+define_pd_global(uintx,PermSize,                     12*M );
+define_pd_global(uintx,MaxPermSize,                  64*M );
+define_pd_global(bool, NeverActAsServerClassMachine, true );
+define_pd_global(uint64_t,MaxRAM,                    1ULL*G);
 define_pd_global(bool, CICompileOSR,                 true );
-#endif // TIERED
+#endif // !TIERED
 define_pd_global(bool, UseTypeProfile,               false);
 define_pd_global(bool, RoundFPResults,               true );
 
-
 define_pd_global(bool, LIRFillDelaySlots,            false);
-define_pd_global(bool, OptimizeSinglePrecision,      true);
+define_pd_global(bool, OptimizeSinglePrecision,      true );
 define_pd_global(bool, CSEArrayLength,               false);
-define_pd_global(bool, TwoOperandLIRForm,            true);
-
+define_pd_global(bool, TwoOperandLIRForm,            true );
 
-define_pd_global(intx, SafepointPollOffset, 256);
+define_pd_global(intx, SafepointPollOffset,          256  );

src/cpu/x86/vm/c2_globals_x86.hpp

@@ -22,7 +22,6 @@
  *
  */
 
-//
 // Sets the default values for platform dependent flags used by the server compiler.
 // (see c2_globals.hpp).  Alpha-sorted.
 
@@ -46,8 +45,8 @@ define_pd_global(intx, CompileThreshold,             1000);
 define_pd_global(intx, CompileThreshold,             10000);
 #endif // TIERED
 define_pd_global(intx, Tier2CompileThreshold,        10000);
-define_pd_global(intx, Tier3CompileThreshold,        20000 );
-define_pd_global(intx, Tier4CompileThreshold,        40000 );
+define_pd_global(intx, Tier3CompileThreshold,        20000);
+define_pd_global(intx, Tier4CompileThreshold,        40000);
 
 define_pd_global(intx, BackEdgeThreshold,            100000);
 define_pd_global(intx, Tier2BackEdgeThreshold,       100000);
@@ -61,7 +60,6 @@ define_pd_global(intx, FreqInlineSize,               325);
 #ifdef AMD64
 define_pd_global(intx, INTPRESSURE,                  13);
 define_pd_global(intx, InteriorEntryAlignment,       16);
-define_pd_global(intx, NewRatio,                     2);
 define_pd_global(intx, NewSizeThreadIncrease, ScaleForWordSize(4*K));
 define_pd_global(intx, LoopUnrollLimit,              60);
 // InitialCodeCacheSize derived from specjbb2000 run.
@@ -69,19 +67,18 @@ define_pd_global(intx, InitialCodeCacheSize,         2496*K); // Integral multip
 define_pd_global(intx, CodeCacheExpansionSize,       64*K);
 
 // Ergonomics related flags
-define_pd_global(uintx, DefaultMaxRAM, 32*G);
+define_pd_global(uint64_t,MaxRAM,                    128ULL*G);
 #else
 define_pd_global(intx, INTPRESSURE,                  6);
 define_pd_global(intx, InteriorEntryAlignment,       4);
-define_pd_global(intx, NewRatio,                     8); // Design center runs on 1.3.1
 define_pd_global(intx, NewSizeThreadIncrease,        4*K);
-define_pd_global(intx, LoopUnrollLimit,              50); // Design center runs on 1.3.1
+define_pd_global(intx, LoopUnrollLimit,              50);     // Design center runs on 1.3.1
 // InitialCodeCacheSize derived from specjbb2000 run.
 define_pd_global(intx, InitialCodeCacheSize,         2304*K); // Integral multiple of CodeCacheExpansionSize
 define_pd_global(intx, CodeCacheExpansionSize,       32*K);
 
 // Ergonomics related flags
-define_pd_global(uintx, DefaultMaxRAM, 1*G);
+define_pd_global(uint64_t,MaxRAM,                    4ULL*G);
 #endif // AMD64
 define_pd_global(intx, OptoLoopAlignment,            16);
 define_pd_global(intx, RegisterCostAreaRatio,        16000);
@@ -97,8 +94,8 @@ define_pd_global(intx, ReservedCodeCacheSize,        48*M);
 define_pd_global(uintx,CodeCacheMinBlockLength,      4);
 
 // Heap related flags
-define_pd_global(uintx, PermSize,    ScaleForWordSize(16*M));
-define_pd_global(uintx, MaxPermSize, ScaleForWordSize(64*M));
+define_pd_global(uintx,PermSize,    ScaleForWordSize(16*M));
+define_pd_global(uintx,MaxPermSize, ScaleForWordSize(64*M));
 
 // Ergonomics related flags
 define_pd_global(bool, NeverActAsServerClassMachine, false);

src/cpu/x86/vm/globals_x86.hpp

@@ -22,17 +22,16 @@
  *
  */
 
-//
 // Sets the default values for platform dependent flags used by the runtime system.
 // (see globals.hpp)
-//
 
-define_pd_global(bool,  ConvertSleepToYield,      true);
-define_pd_global(bool,  ShareVtableStubs,         true);
-define_pd_global(bool,  CountInterpCalls,         true);
+define_pd_global(bool, ConvertSleepToYield,      true);
+define_pd_global(bool, ShareVtableStubs,         true);
+define_pd_global(bool, CountInterpCalls,         true);
+define_pd_global(bool, NeedsDeoptSuspend,        false); // only register window machines need this
 
-define_pd_global(bool, ImplicitNullChecks,          true);  // Generate code for implicit null checks
-define_pd_global(bool, UncommonNullCast,            true);  // Uncommon-trap NULLs past to check cast
+define_pd_global(bool, ImplicitNullChecks,       true);  // Generate code for implicit null checks
+define_pd_global(bool, UncommonNullCast,         true);  // Uncommon-trap NULLs past to check cast
 
 // See 4827828 for this change. There is no globals_core_i486.hpp. I can't
 // assign a different value for C2 without touching a number of files. Use
@@ -42,29 +41,24 @@ define_pd_global(bool, UncommonNullCast,            true);  // Uncommon-trap NUL
 // the uep and the vep doesn't get real alignment but just slops on by
 // only assured that the entry instruction meets the 5 byte size requirement.
 #ifdef COMPILER2
-define_pd_global(intx,  CodeEntryAlignment,       32);
+define_pd_global(intx, CodeEntryAlignment,       32);
 #else
-define_pd_global(intx,  CodeEntryAlignment,       16);
+define_pd_global(intx, CodeEntryAlignment,       16);
 #endif // COMPILER2
+define_pd_global(intx, InlineFrequencyCount,     100);
+define_pd_global(intx, InlineSmallCode,          1000);
 
-define_pd_global(bool, NeedsDeoptSuspend,           false); // only register window machines need this
-
-define_pd_global(uintx, TLABSize,                 0);
+define_pd_global(intx, StackYellowPages, 2);
+define_pd_global(intx, StackRedPages, 1);
 #ifdef AMD64
-define_pd_global(uintx, NewSize, ScaleForWordSize(2048 * K));
 // Very large C++ stack frames using solaris-amd64 optimized builds
 // due to lack of optimization caused by C++ compiler bugs
 define_pd_global(intx, StackShadowPages, SOLARIS_ONLY(20) NOT_SOLARIS(6) DEBUG_ONLY(+2));
 #else
-define_pd_global(uintx, NewSize,                  1024 * K);
 define_pd_global(intx, StackShadowPages, 3 DEBUG_ONLY(+1));
 #endif // AMD64
-define_pd_global(intx,  InlineFrequencyCount,     100);
-define_pd_global(intx,  InlineSmallCode,          1000);
-define_pd_global(intx,  PreInflateSpin,           10);
 
-define_pd_global(intx, StackYellowPages, 2);
-define_pd_global(intx, StackRedPages, 1);
+define_pd_global(intx, PreInflateSpin,           10);
 
 define_pd_global(bool, RewriteBytecodes,     true);
 define_pd_global(bool, RewriteFrequentPairs, true);

src/cpu/zero/vm/globals_zero.hpp

@@ -23,10 +23,8 @@
  *
  */
 
-//
 // Set the default values for platform dependent flags used by the
 // runtime system.  See globals.hpp for details of what they do.
-//
 
 define_pd_global(bool,  ConvertSleepToYield,  true);
 define_pd_global(bool,  ShareVtableStubs,     true);
@@ -37,12 +35,6 @@ define_pd_global(bool,  ImplicitNullChecks,   true);
 define_pd_global(bool,  UncommonNullCast,     true);
 
 define_pd_global(intx,  CodeEntryAlignment,   32);
-define_pd_global(uintx, TLABSize,             0);
-#ifdef _LP64
-define_pd_global(uintx, NewSize,              ScaleForWordSize(2048 * K));
-#else
-define_pd_global(uintx, NewSize,              ScaleForWordSize(1024 * K));
-#endif // _LP64
 define_pd_global(intx,  InlineFrequencyCount, 100);
 define_pd_global(intx,  InlineSmallCode,      1000);
 define_pd_global(intx,  PreInflateSpin,       10);

src/os_cpu/linux_x86/vm/globals_linux_x86.hpp

@@ -22,10 +22,9 @@
  *
  */
 
-//
 // Sets the default values for platform dependent flags used by the runtime system.
 // (see globals.hpp)
-//
+
 define_pd_global(bool, DontYieldALot,            false);
 #ifdef AMD64
 define_pd_global(intx, ThreadStackSize,          1024); // 0 => use system default
@@ -39,11 +38,10 @@ define_pd_global(intx, VMThreadStackSize,        512);
 #endif // AMD64
 
 define_pd_global(intx, CompilerThreadStackSize,  0);
-define_pd_global(intx, SurvivorRatio,            8);
 
-define_pd_global(uintx, JVMInvokeMethodSlack,    8192);
+define_pd_global(uintx,JVMInvokeMethodSlack,     8192);
 
 // Only used on 64 bit platforms
-define_pd_global(uintx, HeapBaseMinAddress,      2*G);
+define_pd_global(uintx,HeapBaseMinAddress,       2*G);
 // Only used on 64 bit Windows platforms
 define_pd_global(bool, UseVectoredExceptions,    false);

src/os_cpu/solaris_x86/vm/globals_solaris_x86.hpp

@@ -22,31 +22,25 @@
  *
  */
 
-//
 // Sets the default values for platform dependent flags used by the runtime system.
 // (see globals.hpp)
-//
+
 define_pd_global(bool, DontYieldALot,            true); // Determined in the design center
 #ifdef AMD64
 define_pd_global(intx, ThreadStackSize,          1024); // 0 => use system default
 define_pd_global(intx, VMThreadStackSize,        1024);
-define_pd_global(intx, SurvivorRatio,            6);
-define_pd_global(uintx, JVMInvokeMethodSlack,    8*K);
+define_pd_global(uintx,JVMInvokeMethodSlack,     8*K);
 #else
-//  UseStackBanging is not pd
-// define_pd_global(bool, UseStackBanging,          true);
-
 // ThreadStackSize 320 allows TaggedStackInterpreter and a couple of test cases
 // to run while keeping the number of threads that can be created high.
 define_pd_global(intx, ThreadStackSize,          320);
 define_pd_global(intx, VMThreadStackSize,        512);
-define_pd_global(intx, SurvivorRatio,            8);
-define_pd_global(uintx, JVMInvokeMethodSlack,    10*K);
+define_pd_global(uintx,JVMInvokeMethodSlack,     10*K);
 #endif // AMD64
 
 define_pd_global(intx, CompilerThreadStackSize,  0);
 
 // Only used on 64 bit platforms
-define_pd_global(uintx, HeapBaseMinAddress,      256*M);
+define_pd_global(uintx,HeapBaseMinAddress,       256*M);
 // Only used on 64 bit Windows platforms
 define_pd_global(bool, UseVectoredExceptions,    false);

src/os_cpu/windows_x86/vm/globals_windows_x86.hpp

@@ -22,10 +22,9 @@
  *
  */
 
-//
 // Sets the default values for platform dependent flags used by the runtime system.
 // (see globals.hpp)
-//
+
 define_pd_global(bool, DontYieldALot,            false);
 
 // Default stack size on Windows is determined by the executable (java.exe
@@ -35,8 +34,6 @@ define_pd_global(bool, DontYieldALot,            false);
 define_pd_global(intx, ThreadStackSize,          0); // 0 => use system default
 define_pd_global(intx, VMThreadStackSize,        0); // 0 => use system default
 
-define_pd_global(intx, SurvivorRatio,            8);
-
 #ifdef ASSERT
 define_pd_global(intx, CompilerThreadStackSize,  1024);
 #else

src/share/vm/gc_implementation/parallelScavenge/psGCAdaptivePolicyCounters.cpp

@@ -51,7 +51,7 @@ PSGCAdaptivePolicyCounters::PSGCAdaptivePolicyCounters(const char* name_arg,
 
     cname = PerfDataManager::counter_name(name_space(), "oldCapacity");
     _old_capacity = PerfDataManager::create_variable(SUN_GC, cname,
-      PerfData::U_Bytes, (jlong) Arguments::initial_heap_size(), CHECK);
+      PerfData::U_Bytes, (jlong) InitialHeapSize, CHECK);
 
     cname = PerfDataManager::counter_name(name_space(), "boundaryMoved");
     _boundary_moved = PerfDataManager::create_variable(SUN_GC, cname,

src/share/vm/memory/collectorPolicy.cpp

@@ -55,7 +55,7 @@ void CollectorPolicy::initialize_flags() {
 
 void CollectorPolicy::initialize_size_info() {
   // User inputs from -mx and ms are aligned
-  set_initial_heap_byte_size(Arguments::initial_heap_size());
+  set_initial_heap_byte_size(InitialHeapSize);
   if (initial_heap_byte_size() == 0) {
     set_initial_heap_byte_size(NewSize + OldSize);
   }

src/share/vm/runtime/arguments.cpp

@@ -37,7 +37,6 @@ SystemProperty* Arguments::_system_properties   = NULL;
 const char*  Arguments::_gc_log_filename        = NULL;
 bool   Arguments::_has_profile                  = false;
 bool   Arguments::_has_alloc_profile            = false;
-uintx  Arguments::_initial_heap_size            = 0;
 uintx  Arguments::_min_heap_size                = 0;
 Arguments::Mode Arguments::_mode                = _mixed;
 bool   Arguments::_java_compiler                = false;
@@ -182,6 +181,9 @@ static ObsoleteFlag obsolete_jvm_flags[] = {
   { "ProcessingToTenuringRatio",     JDK_Version::jdk(5), JDK_Version::jdk(7) },
   { "MinTrainLength",                JDK_Version::jdk(5), JDK_Version::jdk(7) },
   { "AppendRatio",         JDK_Version::jdk_update(6,10), JDK_Version::jdk(7) },
+  { "DefaultMaxRAM",       JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) },
+  { "DefaultInitialRAMFraction",
+                           JDK_Version::jdk_update(6,18), JDK_Version::jdk(7) },
   { NULL, JDK_Version(0), JDK_Version(0) }
 };
 
@@ -555,6 +557,10 @@ static bool set_numeric_flag(char* name, char* value, FlagValueOrigin origin) {
   if (!is_neg && CommandLineFlags::uintxAtPut(name, &uintx_v, origin)) {
     return true;
   }
+  uint64_t uint64_t_v = (uint64_t) v;
+  if (!is_neg && CommandLineFlags::uint64_tAtPut(name, &uint64_t_v, origin)) {
+    return true;
+  }
   return false;
 }
 
@@ -947,7 +953,7 @@ static void no_shared_spaces() {
 // UseParNewGC and not explicitly set ParallelGCThreads we
 // set it, unless this is a single cpu machine.
 void Arguments::set_parnew_gc_flags() {
-  assert(!UseSerialGC && !UseParallelGC && !UseG1GC,
+  assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC && !UseG1GC,
          "control point invariant");
   assert(UseParNewGC, "Error");
 
@@ -960,13 +966,13 @@ void Arguments::set_parnew_gc_flags() {
   if (ParallelGCThreads == 0) {
     FLAG_SET_DEFAULT(ParallelGCThreads,
                      Abstract_VM_Version::parallel_worker_threads());
-    if (FLAG_IS_DEFAULT(ParallelGCThreads) && ParallelGCThreads == 1) {
+    if (ParallelGCThreads == 1) {
       FLAG_SET_DEFAULT(UseParNewGC, false);
+      FLAG_SET_DEFAULT(ParallelGCThreads, 0);
     }
   }
-  if (!UseParNewGC) {
-    FLAG_SET_DEFAULT(ParallelGCThreads, 0);
-  } else {
+  if (UseParNewGC) {
+    // CDS doesn't work with ParNew yet
     no_shared_spaces();
 
     // By default YoungPLABSize and OldPLABSize are set to 4096 and 1024 respectively,
@@ -980,7 +986,7 @@ void Arguments::set_parnew_gc_flags() {
       FLAG_SET_DEFAULT(OldPLABSize, (intx)1024);
     }
 
-    // AlwaysTenure flag should make ParNew to promote all at first collection.
+    // AlwaysTenure flag should make ParNew promote all at first collection.
     // See CR 6362902.
     if (AlwaysTenure) {
       FLAG_SET_CMDLINE(intx, MaxTenuringThreshold, 0);
@@ -1003,7 +1009,7 @@ void Arguments::set_parnew_gc_flags() {
 // further optimization and tuning efforts, and would almost
 // certainly gain from analysis of platform and environment.
 void Arguments::set_cms_and_parnew_gc_flags() {
-  assert(!UseSerialGC && !UseParallelGC, "Error");
+  assert(!UseSerialGC && !UseParallelOldGC && !UseParallelGC, "Error");
   assert(UseConcMarkSweepGC, "CMS is expected to be on here");
 
   // If we are using CMS, we prefer to UseParNewGC,
@@ -1068,7 +1074,7 @@ void Arguments::set_cms_and_parnew_gc_flags() {
     } else {
       FLAG_SET_ERGO(uintx, MaxNewSize, preferred_max_new_size);
     }
-    if(PrintGCDetails && Verbose) {
+    if (PrintGCDetails && Verbose) {
       // Too early to use gclog_or_tty
       tty->print_cr("Ergo set MaxNewSize: " SIZE_FORMAT, MaxNewSize);
     }
@@ -1097,15 +1103,15 @@ void Arguments::set_cms_and_parnew_gc_flags() {
     } else {
       min_new = NewSize;
     }
-    size_t prev_initial_size = initial_heap_size();
-    if (prev_initial_size != 0 && prev_initial_size < min_new+OldSize) {
-      set_initial_heap_size(min_new+OldSize);
+    size_t prev_initial_size = InitialHeapSize;
+    if (prev_initial_size != 0 && prev_initial_size < min_new + OldSize) {
+      FLAG_SET_ERGO(uintx, InitialHeapSize, min_new + OldSize);
       // Currently minimum size and the initial heap sizes are the same.
-      set_min_heap_size(initial_heap_size());
+      set_min_heap_size(InitialHeapSize);
       if (PrintGCDetails && Verbose) {
         warning("Initial heap size increased to " SIZE_FORMAT " M from "
                 SIZE_FORMAT " M; use -XX:NewSize=... for finer control.",
-                initial_heap_size()/M, prev_initial_size/M);
+                InitialHeapSize/M, prev_initial_size/M);
       }
     }
 
@@ -1114,12 +1120,12 @@ void Arguments::set_cms_and_parnew_gc_flags() {
       align_size_down(MaxHeapSize,
                       CardTableRS::ct_max_alignment_constraint());
 
-    if(PrintGCDetails && Verbose) {
+    if (PrintGCDetails && Verbose) {
       // Too early to use gclog_or_tty
       tty->print_cr("CMS set min_heap_size: " SIZE_FORMAT
            " initial_heap_size:  " SIZE_FORMAT
            " max_heap: " SIZE_FORMAT,
-           min_heap_size(), initial_heap_size(), max_heap);
+           min_heap_size(), InitialHeapSize, max_heap);
     }
     if (max_heap > min_new) {
       // Unless explicitly requested otherwise, make young gen
@@ -1127,7 +1133,7 @@ void Arguments::set_cms_and_parnew_gc_flags() {
       if (FLAG_IS_DEFAULT(NewSize)) {
         FLAG_SET_ERGO(uintx, NewSize, MAX2(NewSize, min_new));
         FLAG_SET_ERGO(uintx, NewSize, MIN2(preferred_max_new_size, NewSize));
-        if(PrintGCDetails && Verbose) {
+        if (PrintGCDetails && Verbose) {
           // Too early to use gclog_or_tty
           tty->print_cr("Ergo set NewSize: " SIZE_FORMAT, NewSize);
         }
@@ -1137,8 +1143,8 @@ void Arguments::set_cms_and_parnew_gc_flags() {
       // later NewRatio will decide how it grows; see above.
       if (FLAG_IS_DEFAULT(OldSize)) {
         if (max_heap > NewSize) {
-          FLAG_SET_ERGO(uintx, OldSize, MIN2(3*NewSize,  max_heap - NewSize));
-          if(PrintGCDetails && Verbose) {
+          FLAG_SET_ERGO(uintx, OldSize, MIN2(3*NewSize, max_heap - NewSize));
+          if (PrintGCDetails && Verbose) {
             // Too early to use gclog_or_tty
             tty->print_cr("Ergo set OldSize: " SIZE_FORMAT, OldSize);
           }
@@ -1186,7 +1192,7 @@ void Arguments::set_cms_and_parnew_gc_flags() {
 
 inline uintx max_heap_for_compressed_oops() {
   LP64_ONLY(return oopDesc::OopEncodingHeapMax - MaxPermSize - os::vm_page_size());
-  NOT_LP64(return DefaultMaxRAM);
+  NOT_LP64(ShouldNotReachHere(); return 0);
 }
 
 bool Arguments::should_auto_select_low_pause_collector() {
@@ -1205,7 +1211,7 @@ bool Arguments::should_auto_select_low_pause_collector() {
 
 void Arguments::set_ergonomics_flags() {
   // Parallel GC is not compatible with sharing. If one specifies
-  // that they want sharing explicitly, do not set ergonmics flags.
+  // that they want sharing explicitly, do not set ergonomics flags.
   if (DumpSharedSpaces || ForceSharedSpaces) {
     return;
   }
@@ -1271,8 +1277,6 @@ void Arguments::set_parallel_gc_flags() {
     FLAG_SET_ERGO(uintx, ParallelGCThreads,
                   Abstract_VM_Version::parallel_worker_threads());
 
-    // PS is a server collector, setup the heap sizes accordingly.
-    set_server_heap_size();
     // If InitialSurvivorRatio or MinSurvivorRatio were not specified, but the
     // SurvivorRatio has been set, reset their default values to SurvivorRatio +
     // 2.  By doing this we make SurvivorRatio also work for Parallel Scavenger.
@@ -1302,8 +1306,6 @@ void Arguments::set_parallel_gc_flags() {
 
 void Arguments::set_g1_gc_flags() {
   assert(UseG1GC, "Error");
-  // G1 is a server collector, setup the heap sizes accordingly.
-  set_server_heap_size();
 #ifdef COMPILER1
   FastTLABRefill = false;
 #endif
@@ -1321,50 +1323,77 @@ void Arguments::set_g1_gc_flags() {
   }
 }
 
-void Arguments::set_server_heap_size() {
+void Arguments::set_heap_size() {
+  if (!FLAG_IS_DEFAULT(DefaultMaxRAMFraction)) {
+    // Deprecated flag
+    FLAG_SET_CMDLINE(uintx, MaxRAMFraction, DefaultMaxRAMFraction);
+  }
+
+  const julong phys_mem =
+    FLAG_IS_DEFAULT(MaxRAM) ? MIN2(os::physical_memory(), (julong)MaxRAM)
+                            : (julong)MaxRAM;
+
+  // If the maximum heap size has not been set with -Xmx,
+  // then set it as fraction of the size of physical memory,
+  // respecting the maximum and minimum sizes of the heap.
   if (FLAG_IS_DEFAULT(MaxHeapSize)) {
-    const uint64_t reasonable_fraction =
-      os::physical_memory() / DefaultMaxRAMFraction;
-    const uint64_t maximum_size = (uint64_t)
-                 (FLAG_IS_DEFAULT(DefaultMaxRAM) && UseCompressedOops ?
-                     MIN2(max_heap_for_compressed_oops(), DefaultMaxRAM) :
-                     DefaultMaxRAM);
-    size_t reasonable_max =
-      (size_t) os::allocatable_physical_memory(reasonable_fraction);
-    if (reasonable_max > maximum_size) {
-      reasonable_max = maximum_size;
+    julong reasonable_max = phys_mem / MaxRAMFraction;
+
+    if (phys_mem <= MaxHeapSize * MinRAMFraction) {
+      // Small physical memory, so use a minimum fraction of it for the heap
+      reasonable_max = phys_mem / MinRAMFraction;
+    } else {
+      // Not-small physical memory, so require a heap at least
+      // as large as MaxHeapSize
+      reasonable_max = MAX2(reasonable_max, (julong)MaxHeapSize);
+    }
+    if (!FLAG_IS_DEFAULT(ErgoHeapSizeLimit) && ErgoHeapSizeLimit != 0) {
+      // Limit the heap size to ErgoHeapSizeLimit
+      reasonable_max = MIN2(reasonable_max, (julong)ErgoHeapSizeLimit);
+    }
+    if (UseCompressedOops) {
+      // Limit the heap size to the maximum possible when using compressed oops
+      reasonable_max = MIN2(reasonable_max, (julong)max_heap_for_compressed_oops());
     }
+    reasonable_max = os::allocatable_physical_memory(reasonable_max);
+
+    if (!FLAG_IS_DEFAULT(InitialHeapSize)) {
+      // An initial heap size was specified on the command line,
+      // so be sure that the maximum size is consistent.  Done
+      // after call to allocatable_physical_memory because that
+      // method might reduce the allocation size.
+      reasonable_max = MAX2(reasonable_max, (julong)InitialHeapSize);
+    }
+
     if (PrintGCDetails && Verbose) {
       // Cannot use gclog_or_tty yet.
-      tty->print_cr("  Max heap size for server class platform "
-                    SIZE_FORMAT, reasonable_max);
-    }
-    // If the initial_heap_size has not been set with -Xms,
-    // then set it as fraction of size of physical memory
-    // respecting the maximum and minimum sizes of the heap.
-    if (initial_heap_size() == 0) {
-      const uint64_t reasonable_initial_fraction =
-        os::physical_memory() / DefaultInitialRAMFraction;
-      const size_t reasonable_initial =
-        (size_t) os::allocatable_physical_memory(reasonable_initial_fraction);
-      const size_t minimum_size = NewSize + OldSize;
-      set_initial_heap_size(MAX2(MIN2(reasonable_initial, reasonable_max),
-                                minimum_size));
-      // Currently the minimum size and the initial heap sizes are the same.
-      set_min_heap_size(initial_heap_size());
-      if (PrintGCDetails && Verbose) {
-        // Cannot use gclog_or_tty yet.
-        tty->print_cr("  Initial heap size for server class platform "
-                      SIZE_FORMAT, initial_heap_size());
-      }
-    } else {
-      // A minimum size was specified on the command line.  Be sure
-      // that the maximum size is consistent.
-      if (initial_heap_size() > reasonable_max) {
-        reasonable_max = initial_heap_size();
-      }
+      tty->print_cr("  Maximum heap size " SIZE_FORMAT, reasonable_max);
     }
-    FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx) reasonable_max);
+    FLAG_SET_ERGO(uintx, MaxHeapSize, (uintx)reasonable_max);
+  }
+
+  // If the initial_heap_size has not been set with InitialHeapSize
+  // or -Xms, then set it as fraction of the size of physical memory,
+  // respecting the maximum and minimum sizes of the heap.
+  if (FLAG_IS_DEFAULT(InitialHeapSize)) {
+    julong reasonable_initial = phys_mem / InitialRAMFraction;
+
+    reasonable_initial = MAX2(reasonable_initial, (julong)(OldSize + NewSize));
+    reasonable_initial = MIN2(reasonable_initial, (julong)MaxHeapSize);
+
+    reasonable_initial = os::allocatable_physical_memory(reasonable_initial);
+
+    if (PrintGCDetails && Verbose) {
+      // Cannot use gclog_or_tty yet.
+      tty->print_cr("  Initial heap size " SIZE_FORMAT, (uintx)reasonable_initial);
+    }
+    FLAG_SET_ERGO(uintx, InitialHeapSize, (uintx)reasonable_initial);
+
+    // Subsequent ergonomics code may expect min_heap_size to be set
+    // if InitialHeapSize is.  Use whatever the current values are
+    // for OldSize and NewSize, whether or not they were set on the
+    // command line.
+    set_min_heap_size(OldSize + NewSize);
   }
 }
 
@@ -1448,7 +1477,7 @@ bool Arguments::verify_percentage(uintx value, const char* name) {
   return false;
 }
 
-static void set_serial_gc_flags() {
+static void force_serial_gc() {
   FLAG_SET_DEFAULT(UseSerialGC, true);
   FLAG_SET_DEFAULT(UseParNewGC, false);
   FLAG_SET_DEFAULT(UseConcMarkSweepGC, false);
@@ -1584,15 +1613,15 @@ bool Arguments::check_vm_args_consistency() {
     // force sharing off.
     if (DumpSharedSpaces || ForceSharedSpaces) {
       jio_fprintf(defaultStream::error_stream(),
-                  "Reverting to Serial GC because of %s \n",
+                  "Reverting to Serial GC because of %s\n",
                   ForceSharedSpaces ? " -Xshare:on" : "-Xshare:dump");
-      set_serial_gc_flags();
+      force_serial_gc();
       FLAG_SET_DEFAULT(SOLARIS_ONLY(UseISM) NOT_SOLARIS(UseLargePages), false);
     } else {
-      if (UseSharedSpaces) {
+      if (UseSharedSpaces && Verbose) {
         jio_fprintf(defaultStream::error_stream(),
                     "Turning off use of shared archive because of "
-                    "choice of garbage collector or large pages \n");
+                    "choice of garbage collector or large pages\n");
       }
       no_shared_spaces();
     }
@@ -1925,8 +1954,8 @@ jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args,
         describe_range_error(errcode);
         return JNI_EINVAL;
       }
-      FLAG_SET_CMDLINE(uintx, MaxNewSize, (size_t) long_initial_eden_size);
-      FLAG_SET_CMDLINE(uintx, NewSize, (size_t) long_initial_eden_size);
+      FLAG_SET_CMDLINE(uintx, MaxNewSize, (uintx)long_initial_eden_size);
+      FLAG_SET_CMDLINE(uintx, NewSize, (uintx)long_initial_eden_size);
     // -Xms
     } else if (match_option(option, "-Xms", &tail)) {
       julong long_initial_heap_size = 0;
@@ -1937,9 +1966,9 @@ jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args,
         describe_range_error(errcode);
         return JNI_EINVAL;
       }
-      set_initial_heap_size((size_t) long_initial_heap_size);
+      FLAG_SET_CMDLINE(uintx, InitialHeapSize, (uintx)long_initial_heap_size);
       // Currently the minimum size and the initial heap sizes are the same.
-      set_min_heap_size(initial_heap_size());
+      set_min_heap_size(InitialHeapSize);
     // -Xmx
     } else if (match_option(option, "-Xmx", &tail)) {
       julong long_max_heap_size = 0;
@@ -1950,7 +1979,7 @@ jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args,
         describe_range_error(errcode);
         return JNI_EINVAL;
       }
-      FLAG_SET_CMDLINE(uintx, MaxHeapSize, (size_t) long_max_heap_size);
+      FLAG_SET_CMDLINE(uintx, MaxHeapSize, (uintx)long_max_heap_size);
     // Xmaxf
     } else if (match_option(option, "-Xmaxf", &tail)) {
       int maxf = (int)(atof(tail) * 100);
@@ -2196,9 +2225,9 @@ jint Arguments::parse_each_vm_init_arg(const JavaVMInitArgs* args,
 
       if (FLAG_IS_DEFAULT(MaxHeapSize)) {
          FLAG_SET_CMDLINE(uintx, MaxHeapSize, initHeapSize);
-         set_initial_heap_size(MaxHeapSize);
+         FLAG_SET_CMDLINE(uintx, InitialHeapSize, initHeapSize);
          // Currently the minimum size and the initial heap sizes are the same.
-         set_min_heap_size(initial_heap_size());
+         set_min_heap_size(initHeapSize);
       }
       if (FLAG_IS_DEFAULT(NewSize)) {
          // Make the young generation 3/8ths of the total heap.
@@ -2676,7 +2705,7 @@ jint Arguments::parse(const JavaVMInitArgs* args) {
   }
 
 #ifdef SERIALGC
-  set_serial_gc_flags();
+  force_serial_gc();
 #endif // SERIALGC
 #ifdef KERNEL
   no_shared_spaces();
@@ -2690,18 +2719,22 @@ jint Arguments::parse(const JavaVMInitArgs* args) {
     return JNI_EINVAL;
   }
 
-  if (UseParallelGC || UseParallelOldGC) {
-    // Set some flags for ParallelGC if needed.
-    set_parallel_gc_flags();
-  } else if (UseConcMarkSweepGC) {
-    // Set some flags for CMS
+  if (UseConcMarkSweepGC) {
+    // Set flags for CMS and ParNew.  Check UseConcMarkSweep first
+    // to ensure that when both UseConcMarkSweepGC and UseParNewGC
+    // are true, we don't call set_parnew_gc_flags() as well.
     set_cms_and_parnew_gc_flags();
-  } else if (UseParNewGC) {
-    // Set some flags for ParNew
-    set_parnew_gc_flags();
-  } else if (UseG1GC) {
-    // Set some flags for garbage-first, if needed.
-    set_g1_gc_flags();
+  } else {
+    // Set heap size based on available physical memory
+    set_heap_size();
+    // Set per-collector flags
+    if (UseParallelGC || UseParallelOldGC) {
+      set_parallel_gc_flags();
+    } else if (UseParNewGC) {
+      set_parnew_gc_flags();
+    } else if (UseG1GC) {
+      set_g1_gc_flags();
+    }
   }
 
 #ifdef SERIALGC

src/share/vm/runtime/arguments.hpp

@@ -254,7 +254,6 @@ class Arguments : AllStatic {
   static bool   _has_profile;
   static bool   _has_alloc_profile;
   static const char*  _gc_log_filename;
-  static uintx  _initial_heap_size;
   static uintx  _min_heap_size;
 
   // -Xrun arguments
@@ -300,8 +299,8 @@ class Arguments : AllStatic {
   static void set_g1_gc_flags();
   // GC ergonomics
   static void set_ergonomics_flags();
-  // Setup heap size for a server platform
-  static void set_server_heap_size();
+  // Setup heap size
+  static void set_heap_size();
   // Based on automatic selection criteria, should the
   // low pause collector be used.
   static bool should_auto_select_low_pause_collector();
@@ -434,9 +433,7 @@ class Arguments : AllStatic {
   static bool has_profile()                 { return _has_profile; }
   static bool has_alloc_profile()           { return _has_alloc_profile; }
 
-  // -Xms , -Xmx
-  static uintx initial_heap_size()          { return _initial_heap_size; }
-  static void  set_initial_heap_size(uintx v) { _initial_heap_size = v;  }
+  // -Xms, -Xmx
   static uintx min_heap_size()              { return _min_heap_size; }
   static void  set_min_heap_size(uintx v)   { _min_heap_size = v;  }
 

src/share/vm/runtime/globals.cpp

@@ -324,6 +324,32 @@ void CommandLineFlagsEx::uintxAtPut(CommandLineFlagWithType flag, uintx value, F
   faddr->origin = origin;
 }
 
+bool CommandLineFlags::uint64_tAt(char* name, size_t len, uint64_t* value) {
+  Flag* result = Flag::find_flag(name, len);
+  if (result == NULL) return false;
+  if (!result->is_uint64_t()) return false;
+  *value = result->get_uint64_t();
+  return true;
+}
+
+bool CommandLineFlags::uint64_tAtPut(char* name, size_t len, uint64_t* value, FlagValueOrigin origin) {
+  Flag* result = Flag::find_flag(name, len);
+  if (result == NULL) return false;
+  if (!result->is_uint64_t()) return false;
+  uint64_t old_value = result->get_uint64_t();
+  result->set_uint64_t(*value);
+  *value = old_value;
+  result->origin = origin;
+  return true;
+}
+
+void CommandLineFlagsEx::uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, FlagValueOrigin origin) {
+  Flag* faddr = address_of_flag(flag);
+  guarantee(faddr != NULL && faddr->is_uint64_t(), "wrong flag type");
+  faddr->set_uint64_t(value);
+  faddr->origin = origin;
+}
+
 bool CommandLineFlags::doubleAt(char* name, size_t len, double* value) {
   Flag* result = Flag::find_flag(name, len);
   if (result == NULL) return false;

src/share/vm/runtime/globals_extension.hpp

@@ -202,6 +202,7 @@ class CommandLineFlagsEx : CommandLineFlags {
   static void boolAtPut(CommandLineFlagWithType flag, bool value, FlagValueOrigin origin);
   static void intxAtPut(CommandLineFlagWithType flag, intx value, FlagValueOrigin origin);
   static void uintxAtPut(CommandLineFlagWithType flag, uintx value, FlagValueOrigin origin);
+  static void uint64_tAtPut(CommandLineFlagWithType flag, uint64_t value, FlagValueOrigin origin);
   static void doubleAtPut(CommandLineFlagWithType flag, double value, FlagValueOrigin origin);
   static void ccstrAtPut(CommandLineFlagWithType flag, ccstr value, FlagValueOrigin origin);
 

src/share/vm/services/management.cpp

@@ -790,7 +790,7 @@ JVM_ENTRY(jobject, jmm_GetMemoryUsage(JNIEnv* env, jboolean heap))
   assert(!has_undefined_init_size, "Undefined init size");
   assert(!has_undefined_max_size, "Undefined max size");
 
-  MemoryUsage usage((heap ? Arguments::initial_heap_size() : total_init),
+  MemoryUsage usage((heap ? InitialHeapSize : total_init),
                     total_used,
                     total_committed,
                     (heap ? Universe::heap()->max_capacity() : total_max));